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Mend Ravenheat CSI 85 Heating Thermostat Diverter Valve

ravenheat csi 85?

hi
I need help with my boiler.
When i run the hot water the boiler lights normal but the high flame on the burner stays on and does not regulate down causing the boiler to overheat and shut down then restarts again and again,changed the dhw thermostat and diverter valve and they seems to ne a good flow of water around the system. any help much appreciated. ps central heating seems fine.
thanks neal

neal
August 2010

Ravenheat Ravenheat CSI 85 Heating, Home Heating Systems Heating Thermostat Diverter Valve

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Ravenheat CSI 85 Boiler - Overheating Issue